Trolley.



UNITED STATES T OFFICE.

(HARLES MY R ON WHITCOMB. OF PQRTLAND, OREGON;

TROLLEY.

' Specification of Letters Patent.

Patented a -L26, 1908. I

Application'filed April 9, 1906. Serial No. 310,811.

{a allwhom it may concern: I e ltknown that I, CHARLES-h/IYRON WHIT- MB,a citizen of the United States'residing.

' maintain trolley wire upon the; center of a t ffortland, in the countyof M ltnomah and of Oregon, have invented certain new a iidu sei'ulImprovements in Trolleys, 0f

the following is a specification.

'lfhis invention relates to trolley wheels and their; mountings, and.has for one of its obj ectsi to provide a trolley wheel-which will theWheel when passingdefective overhead switches. crosswires, defectivelyarranged curves, or curves which have for any reason becomedisarran'ged'or when passing at exce s sive speecjl around curves, orpassmg other trons. oi" the line which have a tendency to e 'whe el*offof the conductor wire, ,viou'slyoften results. in the loss of hebreaking of guy wires, andfre 1 a rapently in tearing down the trolleywire, or

t re

k 'aking of the poles. Another object resides in the provision of asectional wheel whereby it may be readily taken apart for removal or forthe purpose of reversing the same with respectto the trolley ole..

5" Ai's'till further object ist'o provide a trolley wheelso constructedand arranged as'to re- :taih oil and permit the distribution; tothejournal bearings of'thewheel.

With the-"aboye and-other ob'ects in view the invention consists in thecom inatior'i and arrangement of parts hereinafter referred to,illustrated in the accompanying; drawings particularly pointed outin'the appended ImS. Y

In the drawings: Figure'l is a sectional- I view'illustrating the upperforked end of a trolley pole carrying my improved wheel. Fig 2 is a sideelevation. I Fig. 3 is a transverse, sectional view through the centerof.fth e wheel. Fig. 4 is a transverse, sectional mg arms .2 terminatingat their upperends in {substantially parallel relation,- as" at 3, to

.view onthe line afiaof Fig. l, and Fig. 5- is a detail in section of, amodified form of the bearing for the trolley wheel.

' Referring now more articularly to the accom anylng drawings tereference character I n icates a'trolley pole"v rovided' at its upperend with the opposite y disposed, diverg- "forrriat the'end. ofeach aguard finger 4.

. The substantially straight portion of each arm-is provided with arecess 5 formed-from its outerside andthebottom- (if each recess isprovided with a perforation 6 to form a bearmg for the rece tion andsupport of corresponding journal s 7 having a screw threaded engagementin the o ening 8 formed in the end of the corres' ont ing end section90f the. wheel. Obvious y, these journal bearings 7 may be formedintegrally with the end sections 9 and in any event each journal 7 ishollow. with its bore 10 communicating with the corresponding hollow endsection 9 to permit the passage thereinto of oil retained normallywithin the retainer '11 formed by the hollow construction of the endsections and the .in-.

termediate or center section 12 hereinafter mores ecifically referredto. The bottom of each 0 the aforesaid recesses .5 forms an an nularflange 13 to provide one wall of a race Way for the roller or otherbearings 14, each recess having its outer end enlarged .and screwthreaded as at 15 to ermit of working fit therein of-the external yscrew threaded cap 15 which forms the outer wall of said race way; Inorder to automatically lubrlcate the roller or other-bearings 14 Iprovide cates with the bore of the journal. 7

' The major end of each end section 9, is provided with an annularflange 17 whose pe; riphery is screw threaded to r.ece1ve thescrewthreads of the oppositely disposed annular shoulders 18 formed as aresult of re- .each journal with a slot 16 which communi-.

ducing the inner periphery of the center or intermediate section 12ening rib 19. I I

From the foregoing it will be understood that my improved wheelis hollowso that it to form the strengthmay contain oil for the automaticlubricationof the bearings and in order to su ply the interior of thewheel with oil I pro'vic ean oil inlet 19 in one of the end sections)which may beclosed in any suitable manner, such, for instance as asuitable screw cap 20.

-. The wheel'is. designed-for receiving the.

trolley wire 21 and holding it normally iii the annular groove 22 of theintermediate or cen-. ter section 12']and' under normal cond tions thetrolley wir'e will be so maintained. However, in the event of adefectiveover-head switch,' cross-over, sharp curve, excessive speed aroundcurves "or' byreason of any other abnormal conditions the wheel. may-bethrown from the trolley wire, but the guards 4 will prevent.-the wheelbeing thrown en'- tirely away fromthe wire, and I also provide means forguiding the wire '12 and returning it to the cen terior. intermediatesection of the wheel. T o accomplish this latter feature I provide theexterior of each end section with the spiral 23 which will cause thewire to travel thereupon toward the center of th wheel in a manner wellunderstood.

It will be noted that the inner side ofth upwardly directed portion 3 ofeach arm 2 has a tapering projection 24 which cooperates with thecorresponding arm 2 and with the correspondiny tapering formation 25 atthe minor-end of each end section to form a cone bearing.

It will now be understood that I provide an improved trolley wheelcapable of traveling along the said wire as readily as the. usual formof such devices and that I provide means to guard agail'ist displacement.of the wheel witltrespe'ct to the wire and also in the event ofdisplacement of the wire with respect to the center of the wheel toreturn the wire to its center. It will also be appre ciated that in Viewof the detachable relation of the elements embodied in my improvedcombination I am enabled to remove one with an annular flange 31 at itsit-Jn'er end,

said flange corresponding in structure and,

function to the flai'ige 13 on the end of the pole shown in F1g. 1.teriorly screw threaded so as to be removabl v and adjustabl v mountedin the guard finger 4 of the pole, and when adjusted the This bushing isex-.

ing the bushing 30, inasmuch as the plug 15 and the rollers 14 andtheflange 31 are all carried by the bushing.

Having thus described my invention, what Iclaim and desire to secure byLetters Patcm is:- i

The combination with a trollevpole hav'- ing spaced arms at one end, thearms terminating in guards, of a hollow wheel made up of intermediateand end sections detachably connected together, the intermediate sectionhaving an annular cavity in its periphery and the outer surfaces ofthe'endsections havingspiral grooves, each end-section also having afixed hollow journal at one end and each journal having a slot-therein,bears ings surrounding each journal, a cap arranged at the outer end ofeach' journal to preventdisplacement of the bearings, and an opening inone end section to permit of the entrance of oil within the wheel to be'contained therein to supply the bearings by Way of said journals. a

In testimony whereof I have signe(. l my name to this specification inthe presence of two subscribing witnesses.

CHARLES MYRON WHITGQMB, Witnesses:

E. SMITH, G. F, MAR IN.

